gpu: Refactor GpuMemoryBuffer framework for multi-process support.

cc/resources/pixel_buffer_raster_worker_pool.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/resources/pixel_buffer_raster_worker_pool.h"
 
 #include "base/containers/stack_container.h"
 #include "base/debug/trace_event.h"
 #include "base/values.h"
 #include "cc/debug/traced_value.h"
@@ skipping 218 matching lines @@
   // another check.
   check_for_completed_raster_tasks_callback_.Cancel();
   check_for_completed_raster_tasks_pending_ = false;
   ScheduleCheckForCompletedRasterTasks();
 
   TRACE_EVENT_ASYNC_STEP1(
       "cc", "ScheduledTasks", this, StateName(),
       "state", TracedValue::FromValue(StateAsValue().release()));
 }
 
+GLenum PixelBufferRasterWorkerPool::GetResourceFormat() const {
+  return resource_provider()->best_texture_format();
+}
+
 void PixelBufferRasterWorkerPool::CheckForCompletedTasks() {
   TRACE_EVENT0("cc", "PixelBufferRasterWorkerPool::CheckForCompletedTasks");
 
   RasterWorkerPool::CheckForCompletedTasks();
   CheckForCompletedUploads();
   FlushUploads();
 
   TaskDeque completed_tasks;
   completed_tasks_.swap(completed_tasks);
 
@@ skipping 425 matching lines @@
 
   throttle_state->SetInteger("bytes_available_for_upload",
                              kMaxPendingUploadBytes - bytes_pending_upload_);
   throttle_state->SetInteger("bytes_pending_upload", bytes_pending_upload_);
   throttle_state->SetInteger("scheduled_raster_task_count",
                              scheduled_raster_task_count_);
   return throttle_state.PassAs<base::Value>();
 }
 
 }  // namespace cc